Groz Heavy-Duty G-Clamp / C-Clamp

Built for maximum resilience in industrial and workshop environments, the Groz General Purpose Heavy-Duty G-Clamp is manufactured from high-tensile SG iron, featuring precision-machined ACME threads and a swiveling pad for even pressure application.

Designed for professional woodworking, metalworking, fabrication, and general assembly tasks, Groz Heavy-Duty G-Clamps are engineered to withstand extreme clamping pressures without compromising safety or precision.

The frame is cast from premium SG (Spheroidal Graphite) iron, delivering a robust tensile strength of 60,000 PSI. Unlike brittle cast-iron alternatives, Groz designs these frames with a built-in safety factor ensuring the handle will bend before the frame experiences catastrophic overstress. The steel main screw features rolled ACME threads for smooth, continuous torque transmission, paired with a swiveling ball-and-socket pad that automatically adjusts to uneven or angled workpiece surfaces to ensure uniform pressure distribution.